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Finding the Fourth Proportional to 432,790.80, 648,667.80 and 222,320.40

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Solution

The fourth proportional to 432,790.80, 648,667.80 and 222,320.40 is: 333,214.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,790.80 : 648,667.80 = 222,320.40 : x
  2. Step 2: Convert to fraction form
    432,790.80/648,667.80 = 222,320.40/x
  3. Step 3: Cross multiply
    432,790.80x = 648,667.80 × 222,320.40
  4. Step 4: Simplify right side
    432,790.80x = 144,212,084,763.12
  5. Step 5: Solve for x
    x = 144,212,084,763.12/432,790.80
  6. Step 6: Final answer
    x = 333,214.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.